BME FACULTY OF TRANSPORTATION ENGINEERING AND VEHICLE ENGINEERING

System Design

Wahl István – 2019.03.26.

KOGGM614JÁRMŰIPARI KUTATÁS ÉS FEJLESZTÉS FOLYAMATA

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Tartalomjegyzék

Rendszer-architektúra terv

Rendszer, alrendszer, intefészek

A „rendszer” definiálása

Rövidítések

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Rövidítések

• BP: Base Practices – Alap eljárások

• HMI: Human-Machine Interface – Ember-Gép Interfész

• HW: Hardware – Hardver

• QMS: Quality Management System – Minőségirányítási

rendszer

• SBS: System Breakdown Structure – Rendszerfelépítés

• SW: Software – Szoftver

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Definíciók

Sources: Automotive SPICE Process Assessment / Reference Model – v3.1 / ISO26262 Road vehicles - Functional safety

SYSTEM

• A collection of interacting items organized to accomplish a specific function

or set of functions within a specific environment [Automotive SPICE V3.1]

• set of elements (1.32) that relates at least a sensor, a controller and an

actuator with one another [ISO26262]

• NOTE 1 The related sensor or actuator can be included in the system, or can be external to

the system.

• NOTE 2 An element of a system can also be another system.

ELEMENTS [ISO26262]

• system (1.129) or part of a system including components (1.15),

hardware, software, hardware parts (1.55), and software units (1.125)

COMPONENTS [ISO26262]

• non-system (1.129) level element (1.32) that is logically and technically

separable and is comprised of more than one hardware part (1.55) or of

one or more software units (1.125)

• NOTE A component is a part of a system.

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System, component, HW part, SW unit, and element

Sources: ISO26262 Road vehicles - Functional safety

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Rendszerfelépítés (SBS)

SYSTEM

SUB-SYSTEM A SUB-SYSTEM B

SUB-SYSTEM B1 SUB-SYSTEM B2

HW

SW

MECHANICS

HW

SW

MECHANICS

HW

SW

MECHANICS

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Rendszerhatár, külső / belső interfészek

Jármű (OEM)

Fék-rendszer (TIER 1.A)

SUB-SYSTEM B2

HW

SW

MECHANICS

SUB-SYSTEM B2

HW

SW

MECHANICS

HW

SW

MECHANICS

Hajtás-rendszer (TIER 1.B)

HW

SW

MECHANICS

Futómű-rendszer(TIER 1.C)

Külső interfész

Belső interfész[Szükséges-e a TIER1-eknek közvetlenül egymással az

interfészekről egyeztetniük?]

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Külső interfészek

Jármű külső interfészek:

• Fék- és gázpedál

• Váltó

• Kormánykerék

• Műszerfal

• Világítóberendezések

• Tolatóradar

• Mobil net

HMI

• Egyirányú interfész, pl. műszerfal

• Kétirányú interfész (a járművezető ad és kap információt), pl.

kormánykerék

[Milyen külső jármű interfészeket ismer?]

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Rendszerhatár, külső / belső interfészek

Feladat

Készítse el egy jármű valamely egységének a rendszerfelépítését (SBS), határozza meg a belső, illetve külső interfészeit! Terjedelem max. 1 oldal.

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SYS.3 System Architectural Design

Source: Automotive SPICE Process Assessment / Reference Model – v3.1

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SYS.3 System Architectural Design process description

Source: Automotive SPICE Process Assessment / Reference Model – v3.1

PURPOSE: establish a system architectural design and identify which system

requirements are to be allocated to which elements of the system, and to evaluate the

system architectural design against defined criteria.

PROCESS OUTCOMES:

1. a system architectural design is defined that identifies the elements of the system;

2. the system requirements are allocated to the elements of the system;

3. the interfaces of each system element are defined;

4. the dynamic behavior of the system elements is defined;

5. consistency and bidirectional traceability are established between system requirements

and system architectural design; and

6. the system architectural design is agreed and communicated to all affected parties.

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SYS.3 System Architectural Design – BP

Source: Automotive SPICE Process Assessment / Reference Model – v3.1

Develop system architectural design. Develop and document the system architectural design that specifies the elements of the system with respect to functional and non-functional system requirements. [OUTCOME 1]

Allocate system requirements. Allocate the system requirements to the elements of the system architectural design. [OUTCOME 2]

Define interfaces of system elements. Identify, develop and document the interfaces of each system element. [OUTCOME 3]

Describe dynamic behavior. Evaluate and document the dynamic behavior of the interaction between system elements. [OUTCOME 4]

Evaluate alternative system architectures. Define evaluation criteria for the architecture. Evaluate alternative system architectures according to the defined criteria. Record the rationale for the chosen system architecture. [OUTCOME 1]

BP.1

BP.2

BP.3

BP.4

BP.5

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SYS.3 System Architectural Design – BP

Source: Automotive SPICE Process Assessment / Reference Model – v3.1

Establish bidirectional traceability. Establish bidirectional traceability between system requirements and elements of the system architectural design. [OUTCOME 5]

Ensure consistency. Ensure consistency between system requirements and the system architectural design. [OUTCOME 1, 2, 5, 6]

Communicate agreed system architectural design. Communicate the agreed system architectural design and updates to system architectural design to all relevant parties. [OUTCOME 6]

BP.6

BP.7

BP.8

BME FACULTY OF TRANSPORTATION ENGINEERING AND VEHICLE ENGINEERING

Wahl István

BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS